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The Pliocene Epoch

Jon Galbraith

Created on February 19, 2024

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Transcript

Pliocene Epoch

"Tropical cyclones (also known as hurricanes and typhoons) are now believed to be an important component of the Earth's climate system1-3. In particular, by vigorously mixing the upper ocean, they can affect the ocean's heat uptake, poleward heat transport, and hence global temperatures."

"The response of tropical cyclones to global climate change, and their role in climate, has been a subject of much debate...The role of hurricanes in past climates has also been discussed, especially in relation to 'hothouse' climates such as that of the Eocene epoch...The tropical climate then was also markedly different from the present-day climate. In particular, the Pacific developed a permanent El Niño-like state."

Evidence from PRISM (the Pliocene research, interpretation and synoptic mapping project16-19) indicates mid-Pliocene global mean temperatures 2-3 °C warmer than today. The early Pliocene was approximately 4 °C warmer than today

Fedorov, A. V., Brierley, C. M., & Emanuel, K. (2010). Tropical cyclones and permanent El Niño in the early Pliocene epoch. Nature, 463(7284), 1066-70. https://www.proquest.com/scholarly-journals/tropical-cyclones-permanent-el-niño-early/docview/204478085/se-2